I had this Compaq Presario V6002AU 15.4″ laptop sitting around for a little while – as they do. This laptop had a bad lcd screen, in that the display is dim and doesn’t look like anything is recognizable. I had taken it apart to check the screen. I have a copy of the Maintenance and Service Guide for this laptop. This guide shows how to open and replace parts of the laptop and is a must-have if you are to do this properly without damaging any of the plastics or component boards. Most of the time, these guides are quite accurate – and occasionally they might leave out an instruction or two, like in this case, remove the front panel switch cover requires removing three screws instead of two screws.
Ok, that isn’t the topic of today’s post – but the lcd screen is. The Compaq spare part number for the lcd screen is 431386-001, which is with BrightView, i.e. glossy. I duly went on Google to check whether this panel was available, and found a local supplier on eBay that had this for $81.99 including free postage. Ok, so I ordered it, and when it arrived, I noticed that the backlight cable was a little short. I compared panel part numbers – my original panel is a LG Philips LP154W01 (TL)(AE). The replacement panel is a LP154WX4 so I contacted the seller and we conversed via eBay and email. Anyway after explaining that the backlight cable was too short by about 2cm, I asked whether or not they had a LP154W01 (TL)(AE) in stock.
They came back to me by asking me to cut the backlight cable, and take the old backlight cable and join it to the replacement panel, and that way it should reach. I replied that this is not recommended especially since the backlight voltages are very high, usually from 500 to 900Volts. The wires have silicone insulation and if I do cut it and repair, it can form a leakage point, whereby some of the time, the display becomes dim, due to the backlight not lighting properly. Not to mention voiding the panel warranty if it should fail and then they say that the panel has been tampered with. Anyway, the solution to this eBay panel is that they asked me to send it back and they will refund me.
Now, I could find the required panel, but at a higher price, about $115 – but then it isn’t really worth it. I decided to scrounge around my old broken laptops and eventually came across a Compaq Presario V4000 with the same size screen. Ok, maybe I can use this so proceeded to remove the screen from the laptop. This screen is a LTN154X3-L01 – however the backlight cable is long enough, and the lvds connector is in the right place. I obtained the datasheet for this screen, and confirmed the pin configuration of the lvds connector is the same and the original screen. The resolution is the same, so how about I try it out? I connected this screen temporarily and powered on the laptop and was greeted with a Compaq power up screen, ok – great, so switched off and proceeded to install the screen properly.
After everything was put back in place, I had zero screws left over – always a good feeling. I power up and it wouldn’t power on – now what. Then I realize that maybe the battery is flat. It just happens that one reason I wanted to resurrect this laptop is that it uses the same battery as a HP Pavilion laptop that we had had for many years, which I have a spare battery for. I grabbed the spare battery and put it in and powered on – success, the laptop booted into Windows XP Professional. This laptop only has 1GB of ram and can handle up to 2GB maximum. I think I will use this as my Windows 10 test machine, or perhaps just run Linux on it.
The moral of the story is that quite often lcd screens from different laptops can be compatible as long as the lvds connector is the same and it is located in the right place. This one had a 30 pin lvds connector, but it is always good to compare pin configuration just in case one screen doesn’t use the standard wiring – don’t want to damage a good screen or damage a laptop motherboard.
P.S. No pictures, since a working laptop is … a working laptop.